94838745681 has 9 divisors (see below), whose sum is σ = 136990633819. Its totient is φ = 63225214536.

The previous prime is 94838745671. The next prime is 94838745697. The reversal of 94838745681 is 18654783849.

The square root of 94838745681 is 307959.

It is a perfect power (a square), and thus also a powerful number.

94838745681 is a `hidden beast` number, since 9 + 483 + 8 + 74 + 5 + 6 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 57247740225 + 37591005456 = 239265^2 + 193884^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 94838745681 - 2¹³ = 94838737489 is a prime.

It is a super-2 number, since 2×94838745681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (94838745671) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 872551 + ... + 975203.

Almost surely, 2^94838745681 is an apocalyptic number.

94838745681 is the 307959-th square number.

94838745681 is the 153980-th centered octagonal number.

It is an amenable number.

94838745681 is a deficient number, since it is larger than the sum of its proper divisors (42151888138).

94838745681 is an frugal number, since it uses more digits than its factorization.

94838745681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205312 (or 102656 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 63.

The spelling of 94838745681 in words is "ninety-four billion, eight hundred thirty-eight million, seven hundred forty-five thousand, six hundred eighty-one".